Jacob conrad hollman



(N9 Model.)

J. 0. OLLMAN.

LOCK. Patented Apr. 20, 1897.

INVENTOI? WIT/1 588158 UNITED STATES ATENT rricn.

JACOB CONRAD HOLLMAN, OF CARBON BLACK, PENNSYLVANIA.

LOCK.

SPECIFICATION forming part of Letters Patent N 0. 581,161, dated April20, 1897. Appli ation fil d April 1, 1896. Serial No. 585,726. (Nomodel.)

T all whom it may concern.-

Be it known that I, J ACOB CONRAD HoLL- MAN, of Carbon Black, in thecounty of Butler and State of Pennsylvania, have invented a new anduseful Improvement in Locks, of which the following is a full, clear,and exact description.

My invention relates to an improvement in looks, and especially to animprovement in mortise-locks.

The object of the invention is to provide a lock which may beexpeditiously and conveniently mortised into any door and when placed inposition will not to any appreciable extent detract from the strength ofthe door.

Another object of the invention is to provide a mortise-lock in whichthe bolt and a latch will be in separate cylindrical compartments andwherein each and every part of the .lockwill be of simple, durable, andeconomic construction.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a vertical section through a portion of the door and thejamb for the same, the lock being shown in position and in sideelevation. Fig. 2 is avertical section through the lock, taken at ornear its central portion. Fig. 3 is avertical section takensubstantially on the line 3 3 of Fig. 2, and Fig. 4 is a section takenthrough one of the cylindrical casings at the back of the face-plateconnecting the casings.

In carrying out the invention a face-plate is provided for the lock, towhich faceplate two cylinders A and A are secured at suitable distancesapart, the cylinders being preferably attached to the face-plate byproviding upon the latter lugs 12, which engage with the inner faces ofthe cylinders, as shown in Fig. 4, and rivets 11 or their equivalentsare passed through the cylinders and through their engaging lugs.

The upper cylinder A is preferably the latch-cylinder, and thelatch-head 13 of the latch B in said casing is of the usual constructionand passes out through a suitable opening in the face-plate,'the saidlatch-head having a shank 14 secured thereto. The shank of thelatch-head is surrounded by a coiled spring 15 or other form of spring,and the inner end of the shank of the latch is made to extend through anopening in a partition 16, formed near the rear end of the cylinder A,and the rear end of the spring 15 has bearing against the aforesaidpartition 1.6, while the forward end of the spring has engagementagainst the head of the latch. The rear end of the shank of the latchextending rearwardly beyond the partition 16 has an open ing 17 therein,and in the cylinder A a sleeve 18 is mounted to turn, adapted to receivethe knob-spindle 18, as shown in Fig. 3. The knob-spindle sleeveisprovided with a tongue 19, which extends downward through the opening 17in the rear end of the latch, and the limit of the rearward orinwardmovement of the latch is controlled by means of a stoppin or itsequivalent secured in the aforesaid cylinder A in the path of the latch.Therefore by turning the knob in a direction which will carry the tongue19 rearward the said tongue will carry the latch in the samedirection,admittin g of the door being opened, and upon the release ofthe knob-spindle the spring 15 will act to carry the head of the latchoutward in position to enter the keeper B in the door-jamb, as shown inFig. 1.

1t is evident that by removing the stop 20 the bolt may be pushed farenough inward to permit of the tongue of the knob-spindle sleeve beingdisengaged from the latch, admitting of the removal of the former in theevent that repairs may be necessary or for reversing the latch for aright-hand or lefthand door.

The second cylindrical casing A is located below and vertically inalinement with the upper casing A, as shown in Figs. 1, 2, and 3, and isattached to the face-plate 10 in the same manner as has been heretoforedescribed in relation to the uppermost cylinder-casing. Within the lowercylinder-casin g A the shank 22 of the bolt-head 21 of the bolt B ismounted to slide, and preferably the shank and the bolt-head areconnected in a detachable manner to facilitate the replacement of partswhenever desired. The rear end of the shank of the bolt has slidingmovement through a partition 23 in the rear portion of the casing A, andin the upper edge of the said boltshank 22, near its forward end,preferably two recesses 24: and 25 are produced, but the said recessesmay be of a greater ora less number, as desired, and a spring 26 islocated within the aforesaid casing A, having bearing against a side ofthe casing and against the top of the shank of the bolt, and the outeror forward end of the spring is preferably given a semicylindricalshape, being adapted to enter either of the recesses 2% or 25 of thesaid bolt.

In the rear portion of the upper edge of the bolt-shank one or more,preferably two, substantially angular recesses 27 and 28 are produced,the said recesses being at the rear of the partition 23, and a rearopening 29 is made in the casing A, so placed that when the bolt is inits outer or looking position and when two of the bit-receiving recesses27 and 28 are employed the keyopening will be opposite the rearmostopening or recess 28 in the bolt-shank.

The key 30 may be of any desired construc tion, and its bit is adaptedto have play in the aforesaid recesses 27 and 28. In the operation ofthe bolt, it being in its outer or locked position, as shown in Fig. 2,when it is desired to carry the boltinward this is done in onerevolution of the key, the bit of the key being at that time in therearmost recess 28. Therefore when the key is turned the bit of the keywill strike against the rear wall of the said recess 28 and will forcethe bolt rearward a sufficient distance to cause the spring 26 to leavethe inner spring-receivin g.

recess 25 and be at a point between said recess and the forward recess2%, and as the bit of the key is carried forwardly it will enter theforward bit-recess 27, and the key being further tn rned will bring thislatter or forward bit-recess 27 in alinement with the key-opening,permitting the withdrawal of the key and bringing the bolt at the sametime fully within the lock, and the spring 26 will have entered theforward recess 2t adjacent to the head of the bolt, holding the bolt inits inner position.

It is evident that a lock constructed as above set forth may beexpeditiously and conveniently applied to any door or to any articlenecessary without detracting materially from the strength of the articleto which application is to be made, it being necessary only to make twospaced bearings for the reception of the casings A and A and acountersink to receive the face-plate in addition to the necessaryopenings for the knob-spindle and the introduction of the key.

The forward throw of the bolt B is limited by a pin 31, secured in theshank and engaging with the partition 23 in the casing when the bolt isin its full outer position, as also shown in Fig. 2.

The cylinders may be placed upon separate face-plates, if desired, andmay be of any size or material.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a mortise-lock, a faceplate, a casing securedto the said face-plate and provided with an inner apertured partitionand a removable stop at the rear of the partition, a latch havingsliding movement in the casing, being arranged to pass at its rear endthrough the partition therein and the head of the latch being adapted toextend outward through the faceplate, a spring coiled around the latchbetween its head and the inner partitionof the casing, the rear or innerend of the latch being provided with a vertically-disposed opening, anda spindle-sleeve journaled in the said casing in rear of the partitionand above the latch and provided with a downwardly-projecting tongueentering the slot in the said latch, as and for the purpose specified.

2. In a lock, a face-plate, a casingattached to the said face-plate,said casing having an open rear end and provided witha rear-aperturedpartition, a bolt held to slide in the said casing through the saidpartition and provided with a removable head, the head of the bolt beingarranged to pass outward through the face-plate, the shank portion ofthe bolt forward of the said partition being provided with recesses,recesses being likewise provided in that portion of the bolt extendingrearward of the said casing in front of the partition, a pin secured tothe bolt in rear of and adapted to engage the partition, and a springlocated within the casing, adapted to enter the forward recesses of thebolt, the rear recesses of the said bolt being adapted to receive thebit of a key, as and for the purpose specified.

3. A m ortise-lock,consisting ofa face-plate, two cylindrical casingsprojecting from the face-plate, each casin g having an open inner endand provided with an apertnred partition, a springpressed latch in onecasing and having its inner end slotted and projecting through theaperture of the partition, a removable stop on the bottom and near therear end of the casing, a spindle-sleeve mounted in the casing, abovethe latch and provided with a tongue projecting into the slot of thelatch, a sliding and spring-pressed bolt arranged in the other casingand provided with a removable head and recesses in its inner end toreceive the bit of the key, and a laterally-projecting pin secured inthe bolt and adapted to engage the partition, substantially as hereinshown and described.

JACOB CONRAD IIOLLXIAN.

\Vitnesses:

JOHN IIOLLMAN, L. P. WALKER.

